1 research outputs found
Regulating Phosphorescence Lifetime of Organic Cocrystals by Alkyl Engineering
Phosphorescent
cocrystal is one of the emerging room-temperature
phosphorescence (RTP) materials. However, it remains a great challenge
to understand the relationship between the phosphorescent properties
and molecular aggregation. Herein, we prepared a series of organic
cocrystals with RTP features composed of different alkyl chain lengths.
It is worth noting that the phosphorescent lifetime varied by the
different lengths of alkyl chains. For melamine–succinic acid
cocrystal, the phosphorescence lifetime can reach up to 512 ms. From
the single-crystal analysis, the longer lifetime was mainly attributed
to the shorter distance of molecular stacking between phosphorescent
chromophores resulting in smaller free volume. This study not only
provides a simple method to prepare RTP materials but also explores
the relationship between phosphorescent properties and molecular stacking
in organic phosphorescent cocrystals